Yup, as Mega said, the entire button assembly can be swapped out. Got mine through ppcs.com @ $12 a piece. Looks like you can disassemble it, maybe possible to do a swap if you can crack one upon. Its easier just to swap the entire thing imho.

damn man looking good. I've almost recently been considering upping to a S5 instead of my S3 so i could get back into water cooling. The S3 was just a tad bit too cramped during watercooling for me. You think my prefabbed cords that fit my S3 pretty snugly would be able to make the same cable runs in the S5? That'd be the only reason i'd get it is if i dont have to remake/rebuy new cables!

Thanks man. Do the cables you're using in your S3 have any slack at all to them? If so, you should have no problem using them in an S5. I love it's size, it's not as big as my SM5 (but by CaseLabs standards neither are "big") but it still has enough room to run a nice loop and make it look clean.